We are Tweag I/O

Manifest for composable software

Modular, simple, composable. It's the only way we have
found to build fast, correct and maintainable software.
Modular means that we build software as a collection of
independently useful and reusable parts. We ruthlessly
refactor each part to keep it focused on a single purpose,
making it simple. We deliver software fast by thinking
about composability left right and centre, connecting
parts together from whichever direction, like train
wagons. Composability lets us express arbitrarily complex
behaviours with less code.

Functional, typed, immutable. These are the key
technologies for composable software. We build parts as
functions, because functions compose where objects do not.
We use types to describe functions, because one type is
worth a thousand out-of-date comments. We keep data
immutable, because immutability lets us focus on the
business logic holistically without getting bogged down by
hundreds of corner cases.

Dec. 2013

Founded

Nov. 2015

Paris office opening

Oct. 2015-2018

Horizon 2020 SAGE participant

Sep. 2016

New Cyprus office

Jan. 2016

Awarded French "Innovating Enterprise"

Oct. 2017

Tweag UK opening

Tweagers

Didier Mascarelli

COO

PhD (INSA Lyon) in artificial intelligence. 25 years of
international sales and marketing experience.